![]() There are two options for looking into software causes. If it returns any error codes, please post them here for our exam. It will report failed fan motors and temp sensors. ![]() How to use Apple Hardware Test on your Mac - Apple Support ![]() To diagnose hardware issues, use Apple Hardware Test according to this Apple article for your model: If you are running ANY anti-virus software, so-called "cleaning/maintenance" apps, or torrent software, you are inviting high temps to be an unpleasant and performance-degrading part of your Mac experience. A failed fan (when you have two), failed temp sensors, or as pointed out, dirty fans and airways can run up temps abnormally. High speeds can be normal if you are watching videos or gaming. I'm sure if you lift off the insulator which surrounds to CPU or GPU chip you'll see the paste has oozed through getting all over the SMD devices! To clean this up you'll need to first get the bulk off using a small brush and paper tissue and then get a chargeable spray can loaded with a cleaner that is able to clean away the TIM (Iso Alcohol) so you can clean the SMD devices without the risk of pulling them off.The fans run all the time anyway, but at their default (i.e., normal temperature) speed they are nearly silent. In fact, all you do is damage the chip carriers SMD devices as the TIM effects the capacitance and resistance of the devices so they don't work properly. TIM is designed to be just an interface between the two metal surfaces (if the chip is lidded or in laptops the bare silicon chip) it is not designed to shed heat directly, so spilling over the edge doesn't help you. I find people kill their logic boards by putting too much on! Think of it this way find the thinnest facial tissue cut it into a piece that's the exact same size as the silicon chip, now wet it so you can roll it into a tight ball thats even still more than you need by volume. O'boy load it up with a pound of TIM!! Nope! Less is more here! I ran this message in the Google search & it seems it's a system sensor issue. ' ALERT! Apple hardware test has detected an error UPDATE: I ran the Apple hardware test today. Never had a problem with the mac until a few days ago. This year of macbook tends to have these issues.Īlso to note the logic board was replaced in January & a new board was installed. ![]() That is what's leading me to think it's a GPU issue. For a example, if a play a video on quicktime player or even youtube, I notice it shuts down more abruptly. The computer runs perfect fully smooth and as normal.Ī detail to note is that playing any type of video makes the system turn off faster. To clarify the overheating & shutting down are the only issues. I did that successfully but the system is still shutting down. On recommendation online, I decided to apply new thermal paste to the heat sink 2 days ago. The temperature of my system is a normal range based on what I read in the forums. I hear the fan & can feel it but it has no effect on the CPU. I even ran my system with no applications running & ran into the same issues. The first action I took to find a solution was to check the activity monitor to see the CPU load. I wait for the system to cool down & restart but the problem persist. Then it shuts off or the screen goes black & brings me back to login window after 2-5 minutes (like the Mac went to sleep). My system becomes HOT TO TOUCH (on the left side & backside) 5-15 minutes after startup.
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